Exploring Cell Communication Mechanisms

This is an example of

• short distance

• cell to cell

• long-distance signaling

• autocrine

This is an example of

• short distance

• cell to cell

• long-distance signaling

• autocrine

Which of the following is an example of paracrine signaling?

• Hormones released into the bloodstream

• Neurotransmitters released at a synapse

• Direct contact between cells

• Signal molecules traveling through plasmodesmata

What type of receptor is typically involved in the reception of steroid hormones?

• G-protein coupled receptors

• Ion channel receptors

• Intracellular receptors

• Receptor tyrosine kinases

Which of the following is a primary function of ligands in cell communication?

• To degrade cellular waste

• To bind to receptors and initiate a response

• To provide structural support to the cell

• To transport nutrients across the cell membrane

In plants, which hormone is primarily responsible for cell elongation and growth?

• Ethylene

• Auxin

• Cytokinin

• Gibberellin

Which of the following best describes endocrine signaling?

• Signals are transmitted through direct cell-to-cell contact

• Signals are released into the bloodstream to reach distant targets

• Signals are transmitted through the nervous system

• Signals are released into the extracellular fluid to affect nearby cells

Tags

NGSS.HS-LS1-3

How does nervous signaling differ from endocrine signaling?

• Nervous signaling is slower and longer-lasting

• Nervous signaling involves chemical messengers only

• Nervous signaling is faster and more specific

• Nervous signaling affects only the immune system

Which of the following is a key feature of apoptosis?

• Uncontrolled cell division

• Cell swelling and bursting

• Programmed cell death

• Random DNA mutations

What role do caspases play in apoptosis?

• They repair damaged DNA

• They act as signaling molecules

• They degrade cellular components

• They transport ions across membranes